// Copyright (c) 2014-present, Facebook, Inc. All rights reserved.
//
// You are hereby granted a non-exclusive, worldwide, royalty-free license to use,
// copy, modify, and distribute this software in source code or binary form for use
// in connection with the web services and APIs provided by Facebook.
//
// As with any software that integrates with the Facebook platform, your use of
// this software is subject to the Facebook Developer Principles and Policies
// [http://developers.facebook.com/policy/]. This copyright notice shall be
// included in all copies or substantial portions of the software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
// FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
// COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
// IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
// CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

#import <Foundation/Foundation.h>

NS_ASSUME_NONNULL_BEGIN

/*
 Describes any types that optionally responds to various lifecycle events
 received by the system and propagated by `ApplicationDelegate`.
 */
@protocol FBSDKApplicationObserving <NSObject>

@optional
- (void)applicationDidBecomeActive:(nullable UIApplication *)application;
- (void)applicationWillResignActive:(nullable UIApplication *)application;
- (void)applicationDidEnterBackground:(nullable UIApplication *)application;
- (BOOL)            application:(UIApplication *)application
  didFinishLaunchingWithOptions:(nullable NSDictionary<UIApplicationLaunchOptionsKey, id> *)launchOptions;

- (BOOL)application:(UIApplication *)application
            openURL:(NSURL *)url
  sourceApplication:(nullable NSString *)sourceApplication
         annotation:(nullable id)annotation;

@end

NS_ASSUME_NONNULL_END
